105 lines
2.8 KiB
C++
105 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) 1999-2001 Stephen Williams (steve@icarus.com)
|
|
*
|
|
* This source code is free software; you can redistribute it
|
|
* and/or modify it in source code form under the terms of the GNU
|
|
* General Public License as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
#ifdef HAVE_CVS_IDENT
|
|
#ident "$Id: vpi_iter.cc,v 1.7 2003/02/25 01:17:28 steve Exp $"
|
|
#endif
|
|
|
|
/*
|
|
* Find here the methods functions in support of iterator objects.
|
|
*/
|
|
|
|
# include "vpi_priv.h"
|
|
# include <stdlib.h>
|
|
# include <assert.h>
|
|
|
|
static int iterator_free_object(vpiHandle ref)
|
|
{
|
|
struct __vpiIterator*hp = (struct __vpiIterator*)ref;
|
|
assert(ref->vpi_type->type_code == vpiIterator);
|
|
|
|
if (hp->free_args_flag)
|
|
free(hp->args);
|
|
|
|
free(hp);
|
|
return 1;
|
|
}
|
|
|
|
static const struct __vpirt vpip_iterator_rt = {
|
|
vpiIterator,
|
|
0, // vpi_get_
|
|
0, // vpi_get_str_
|
|
0, // vpi_get_value_
|
|
0, // vpi_put_value_
|
|
0, // handle_
|
|
0, // iterate_
|
|
0, // index_
|
|
&iterator_free_object
|
|
};
|
|
|
|
vpiHandle vpip_make_iterator(unsigned nargs, vpiHandle*args,
|
|
bool free_args_flag)
|
|
{
|
|
struct __vpiIterator*res = (struct __vpiIterator*)
|
|
calloc(1, sizeof(struct __vpiIterator));
|
|
res->base.vpi_type = &vpip_iterator_rt;
|
|
res->args = args;
|
|
res->nargs = nargs;
|
|
res->next = 0;
|
|
|
|
res->free_args_flag = free_args_flag;
|
|
|
|
return &(res->base);
|
|
}
|
|
|
|
/*
|
|
* The vpi_scan function only applies to iterators. It returns the
|
|
* next vpiHandle in the iterated list.
|
|
*/
|
|
vpiHandle vpi_scan(vpiHandle ref)
|
|
{
|
|
if (ref == 0) {
|
|
fprintf(stderr, "ERROR: NULL handle passed to vpi_scan.\n");
|
|
assert(0);
|
|
return 0;
|
|
}
|
|
|
|
if (ref->vpi_type->type_code != vpiIterator) {
|
|
fprintf(stderr, "ERROR: vpi_scan argument is "
|
|
"inappropriate vpiType code %d\n",
|
|
ref->vpi_type->type_code);
|
|
assert(0);
|
|
return 0;
|
|
}
|
|
|
|
struct __vpiIterator*hp = (struct __vpiIterator*)ref;
|
|
assert(ref);
|
|
assert(ref->vpi_type->type_code == vpiIterator);
|
|
|
|
if (ref->vpi_type->index_)
|
|
return (ref->vpi_type->index_(ref, 0));
|
|
|
|
if (hp->next == hp->nargs) {
|
|
vpi_free_object(ref);
|
|
return 0;
|
|
}
|
|
|
|
return hp->args[hp->next++];
|
|
}
|
|
|